2689860 has 48 divisors (see below), whose sum is σ = 7612416. Its totient is φ = 709632.

The previous prime is 2689807. The next prime is 2689861. The reversal of 2689860 is 689862.

2689860 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2689861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7444 + ... + 7796.

It is an arithmetic number, because the mean of its divisors is an integer number (158592).

2^2689860 is an apocalyptic number.

2689860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2689860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3806208).

2689860 is an abundant number, since it is smaller than the sum of its proper divisors (4922556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2689860 is a wasteful number, since it uses less digits than its factorization.

2689860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 2689860 is about 1640.0792663771. The cubic root of 2689860 is about 139.0731288850.

The spelling of 2689860 in words is "two million, six hundred eighty-nine thousand, eight hundred sixty".